The stopping distance of a tractor depends on several factors, including its weight, speed, and the condition of the road or surface it is travelling on. Heavier tractors and tractors travelling at higher speeds will require a longer stopping distance. Bobtail tractors may be lighter than tractors with attachments or trailers, but this does not necessarily mean they are harder to stop.
Other factors that can affect the stopping distance of a tractor include the type of brakes it has, the condition of the brakes, and the driver's reaction time.